Neat product and like others have noted here - well done on the marketing. Doing other things while driving is dangerous no doubt, but it is also a very practical reality. Any product that embraces this practicality and tries to maximize eyes on on the road is a good step forward in making driving safer.

A random idea: Adding a camera to this could open up the dashcam market. In Russia for example, dashcams a very common and are a part of the driving culture (See http://en.wikipedia.org/wiki/Dashcam and http://en.wikipedia.org/wiki/Sousveillance).